Bestandskraft

Thanks. Coming back to my first question, how do you know the weight does not change? Is there some kind of debug mode that shows the plane's current weight in flight? I've been looking for that for a while now.

How do you know the weight does not change? How do you "unload" the S-5s from the UB32, assuming you don't mean just firing them?

During my tests, fuel tanks and bombs separated from the aircraft due to excessive G as advertised. However, I can confirm the Kh-66 Grom, as well as the UPK-23-250, the SPS-141-100 and SPRD-99 remain on the aircraft even when pulling > 10 G.

It seems that the game (at least the MiG-21bis module) uses 0.775 kg/l as fuel density. I tested this by setting an internal fuel of exactly 775 kg, which causes the fuel pointer to indicate 1000 l very precisely, and by setting an internal fuel of 1550 kg, which causes the fuel pointer to indicate 2000 l very precisely. The indicator is slightly off the markings when using 781/1562 kg of fuel. Also, the game really does seem to calculate with a maximum internal fuel of 2280 kg, at least the fuel pointer will indicate approximately 2942 liters (I wrote 2950 above based on guesstimation) with 2280 kg (100%) set as internal fuel.

I have some questions that are all related to the MiG-21bis operating limitations. A few of these have been partially asked on these forums in the past but never received a useful response, at least according to my search. I chose to include those questions here for the sake of completeness. 1) Page 15 of the game manual states: - The main (internal) fuel tank holds 2850 l or 2225 kg. - The 490 l drop tank holds 490 l or 382 kg. - The 800 l drop tank holds 800 l or 625 kg. As stated below on the same page, this all (roughly) translates to 1,279 l/kg or 0,781 kg/l. However, the "fuel specific of gravity" is listed as 0,775 g/cm3, i.e. 0,775 kg/l immediately below. Page 9 of the book "Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions" (I have the hardcopy, but there's a link to a .pdf version at http://forums.eagle.ru/showthread.php?t=138880) also lists a fuel specific gravity of 0,775 g/cm3. Which figure is actually used for in-game calculations? Which OAT is assumed for the 0,781 kg/l and 0,775 kg/l values respectively? 2) According to the mission planner, full internal fuel equates to 2280 kg. The game manual, as stated above, says 2225 kg. Which figure is actually used for in-game calculations? 3) Page 9 of the "Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions" lists a fuel capacity of the inner tanks of 2750 l. The manual, as stated above, has 2850 l. When starting an aircraft with 100% internal fuel from the ramp, the fuel pointer indicates approximately 2950 l regardless of OAT (tested with -50° C and +50° C). Which is the value actually used for in-game calculations? Also, it seems that the effect of OAT on fuel volume is not modelled even though it says so on page 9 of the game manual. Can anyone comment on that? 4) The manual lists a plane empty weight of 5339 kg on page 9. The mission planner has an empty weight of 6255 kg, about 1 ton more. Which value is actually used for in-game calculations? 5) Both the game manual (page 31) and the "Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions" say that the speed limit when carrying 8 bombs OFAB-100 is 800 km/h when BD3-60-21D1 racks are not used, an 1000 km/h when they are used. Does the in-game MiG-21 use these racks? 6) Does the in-game MiG-21 feature model 41 or 42A tyres? 7) Does anyone happen to know the definition of a "second class aerodrome" as mentioned on page 20 of the "Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions"? A runway length (or TORA/TODA) of less than 2000 m seems to be implied, but that is not explicitly stated. 8) Page 31/32 of the game manual states that it is not recommended to build up a g-load in excess of 3 G in flight with certain configurations. These configurations are also mentioned on page 13 of the "Mikoyan-Gurevich MiG-21 Pilot's Flight Operating Instructions". However, immediately below on that page, we are informed that for certain other configurations, g-load instability already commences above 2 G. Contrary to the 3 G case, this is not translated into a warning in the operating limitations. Does anyone have an idea why, and is the 3 G / 2 G load instability even modelled in the game?

Sounds reasonable, thanks.

Today I was shot down with an AIM-120 while in a stationary hover (which I had been in for a time greater than the flight time of an AIM-120). The pilot claimed he saw me on radar. Based on the figures presented in this thread and another one I read a while ago that stated that below 72 kph, you are invisible to radar, it seems that this should not have been possible. While I acknowledge that due to the non-modelled doppler effect I should realistically speaking be detectable at any airspeed in-game, I would still like to know whether flying slow actually makes any difference, or if that 72 kph thing has been removed by a patch.

Great tool. Only problem is that it does not seem to work with DCS Black Shark. Any plans to make it compatible?

And yet again, it may not be a bug after all. Just found this thread dealing with exactly the same topic. http://forums.eagle.ru/showthread.php?t=41276 Too bad the search function would produce an error when searching for "What are you doing" since all these words are apparently too short/common blabla.

Yup, that works. Pretty much proves though that the behaviour mentioned in the OP is a bug.

As stated in the original post, being cleared for taxi or take-off does not change anything for me. Are you sure the reason why he does not complain during your tests isn't that after getting clearance, you simply do not switch back to the ground channel?

Whenever I start taxiing or when I take off and I'm still on the ground (maintenance) radio channel, the maintenance technician says "Hey, what are you doing?!" or the Russian equivalent. This happens regardless of whether I have been cleared for taxi/control hover and whether external power is still connected or not. Does anyone know why the guy is complaining, and more importantly, what I have to do to shut him up (besides not being on ground channel?)

Cool, thanks. Getting more video memory is not an option since I already have a Radeon 5970. The "F11-workaround" has worked every time so far though.

This is what I see when entering some missions. Sometimes it automatically reverts back to the normal cockpit after some time, sometimes not. I have no idea what causes it or why it sometimes fixes itself, other than that it seems to be restricted to missions in which the engine is already running when entering it. It happens with a multi-monitor setup and without, both in windowed mode and fullscreen. Known problem? Any ideas? EDIT: Calling up the F11 airfield view and then going back to cockpit view seems to fix the problem.

Alright, appears as if it is not just my system, but that you simply cannot get a better performance right now with everything maxed out, mainly due to the water issue.

So it was not just my imagination. Thanks for confirming this.

Good idea! There you go. When I am looking to about 11 o'clock I am getting 17-18 FPS. ShootingRangeBenchmark.trk

It seems the main factor to account for the 5 FPS difference is your overclocking to 4 GHz. My processor runs at the stock speed of 3.33 GHz. I am getting a very similar FPS increase when doing the steps as you describe. Although improving FPS is of course not the focus of this thread. Keep'em coming guys.

Thanks for that link. The "problem" is that it uses the Instant Action mission which I can run at full detail without any noticeable slowdown or sluggishness at all. There must be something about my benchmark scene from "Shooting Range" (possibly the city of Krymsk in the distance) that makes it particularly demanding.

I have found various threads that deal with how to IMPROVE your FPS, but I have not seen a consolidated topic about how many FPS people are actually getting before any tweaking. I recently bought an i7-980x, 1xATI Radeon 5970, Catalyst 10.4, 6 GB RAM, TrackIR 5, Windows 7 Professional 64-bit and I was kind of expecting to see better performance with this sytem in max details than I am actually getting. As a benchmark I used the "Shooting Range" mission. Without moving the aircraft (only batteries and external power connected), I measured my FPS when looking out the cockpit to my 11 o'clock towards Krymsk with Skhval uncaged (not moved from the initial position) and ABRIS on the map screen. All graphics settings are maxed out at 1680x1050, no AA/AF, VSync ON, no tweaking whatsover, mirrors on. I am getting around 16 FPS. This seems rather low for a high-end system, especially considering I have seen people post about 50+ FPS on their older systems, albeit without specifying which detail settings they were using. Again, I am not asking how to IMPROVE my FPS (I have already found enough answers to that), but what everyone's FPS are under the aforementioned conditions to get some kind of reference. I apologize in advance if a pertinent topic already exists and I was just too stupid to find it.

4. Are you referring to the real aircraft or the sim? I just took off 10 seconds after switching the INU to on with all 4 buttons lit, and none of them flashed or went out. 13. By "collective switch" I mean switch 7 on page 6-10. Sorry, I always call the center position "Hover mode" because only this position will allow you to enter Hover mode with the appropriate button on the cyclic. "...about captured AP values or even more about how the AP operates with those captured values?" is what I am interested in.

Thanks for that engine restart link, very informative. Upon further testing I can confirm that I can start an engine successfully after a false start without doing a crank inbetween.

Thanks for everyone who participated so far. 2. Frederf, my tests have revealed you're spot on. 4. Frederf, I deliberately left the INU off until the HUD had timed in. Still, even immediately following enabling the INU, the symbols cannot be seen. What exactly do you mean with "accel. alignment"? How do you start that type of alignment? 5. Since there seems to be no way to deliberately enter a degraded INU state, looks like we must assume that these are just fancy dials that do not actually work then. 7. Have you noticed any difference between the switch settings? 8. Just using one engine at max power did the trick. 13. My fault for being not entirely clear. What I mean is the difference in behaviour between Hover and Route mode as set with the collective switch ONLY, without actually engaging Hover hold mode as indicated on the overhead panel. To give a concrete example: With all four AP buttons lit, the DH/DT switch in the DH position (I suppose for my specifc question the setting of this switch does not matter though), no waypoint etc. selected on the PVI-800, no auto-turn to target and no Datalink ingress mode activated, just flying along happily, is there a difference in trim behavior between Route and Hover mode (ONLY on the collective)? 15. While investigating this further I came up on something interesting. I did the normal engine start procedure, and after opening the cut-off valve I waited for the rapid EGT rise and then disengaged the starter with the appropriate button. This should have properly flooded the engine with fuel. Now, after doing that I was unable to do either a false start, a normal start or an engine crank with the affected engine. In all cases, the starter light illuminated, but I did not get an RPM rise with only a very small EGT rise. Any explanation for this?

Hey everyone, I have some rather advanced questions mostly regarding differences between the manual and actual in-game behavior or things that have remained unclear to me despite reading the relevant passages in the manual several times and trying to reproduce the instructions in the sim. I would be grateful if anyone could shed some light on these issues. All pages refer to the .pdf manual although I have used the extended spiral-bound manual for my studies. The pitot heat test switch as described on page 6-43 does not seem to work in that it will not illuminate the corresponding lights although pitot heat has been enabled. What exactly is the difference between the Manual and Automatic settings of the Manual/Auto weapon control switch on the center pedestal? 6-55 says Manual will not give you an automated gate tracking size and vertical compensation for the Vikhr launcher. However, during my tests I still got these in manual mode anyway, and the only difference I actually found is that manual mode will not prevent you from firing if you do not have a launch authorization (your "C" is invalid for some reason). The PVI-800 "SIM" mode as described on 6-63 does not seem to work. At least I am not getting anything observable when enabling this mode. Is INU alignment actually implemented? It seems I am getting a perfect instant alignment as soon as I enable the INU on the auxiliary panel, and I have never seen symbols 17-19 on page 8-8 on the HUD. Also, the PVI-800 INU switches described on 6-64 do not seem to have any effect. Page 6-69 describes the latitude correction dial and switch, but does not specify how these actually work. Also, flipping the switch and rotating the dial do not seem to affect anything. The manual (6-70) says that all NDBs in the game operate in "TLG" mode. However, when I flip the appropriate switch to TLG, all I am getting is a constant beep. If I want to receive the NDB's morse code identifier, I have to activate TLF mode, which is apparently not supposed to work. Does the setting of the Heading Data Selector Switch for INU alignment (6-84) have any actual effect in the sim? Is there a way to perform the PT-12-6 test (6-90/6-91) on the ground? I cannot seem to get the EGT high enough on the ground without lifting off. On the other hand, what is the point of this test if you can only do it when you are already airborne? Page 7-7 mentions that it is possible to set ABRIS time to Zulu. However, even when selecting a zero time zone difference in the ABRIS options it will still display the time as local time. Also, it seems that RAIM predictions as per 7-89 actually treat the time entered in the appropriate field as local time, although according to the manual it should be input in Zulu. I read on these forums that saving and loading routes to/from the hard disk as described on 7-38/7-39 is not actually implemented and only work in the mission editor. Since these posts were a couple of months old I was wondering if this is still true. The ABRIS MENU-PLAN sub-mode features an "SAR" mode which is not described in the manual. What does it do? Changing the PVI-800 waypoint sequence as described on 9-4/9-5 does not work. Is this not implemented or am I doing something wrong? What is the difference in aircraft trimming behavior/logic between autopilot Route and Hover modes when no waypoint is set? (10-29) I cannot get the Shkval Scan Mode (11-10) to work with HMS enabled, although 11-10 explicitly advises you to turn on HMS for that feature if desired. Pressing the designate button with HMS active will simply relocate the Skhval focus as per standard HMS behavior instead of activating Scan Mode. Are there any negative side effects modeled if you fail to do a crank e.g. after a false start?